This post helps teachers understand how to both memorialize September 11 and contextualize the history of the day through five essential questions. Targeted toward secondary students, the questions can help teachers and students compare aspects of September 11 to other events in American history and teach them throughout the year. Written by Joan Brodsky Schur, a panelist for the Smithsonian’s September 11: Teaching Contemporary History forum, this post is published on the Museum's "O Say Can You See?" blog.